Pith Number

pith:345XI4L5

pith:1995:345XI4L5CRP6T6MKF5PV6TOPCI

not attested not anchored not stored refs pending

THE NEED FOR A PARADIGM SHIFT IN OPTICAL ASTRONOMY: A SOLUTION GIVEN BY LIQUID MIRRORS AND EXAMPLES OF THEIR APPLICATIONS TO COSMOLOGY

E.F. Borra

arxiv:astro-ph/9503019 v1 · 1995-03-03 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{345XI4L5CRP6T6MKF5PV6TOPCI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T14:14:31.914339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df3b74717d145fe9f98a2f5f5f4dcf12126b8fa5997920c14335404f4fdaf730

Aliases

arxiv: astro-ph/9503019 · arxiv_version: astro-ph/9503019v1 · doi: 10.48550/arxiv.astro-ph/9503019 · pith_short_12: 345XI4L5CRP6 · pith_short_16: 345XI4L5CRP6T6MK · pith_short_8: 345XI4L5

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/345XI4L5CRP6T6MKF5PV6TOPCI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: df3b74717d145fe9f98a2f5f5f4dcf12126b8fa5997920c14335404f4fdaf730

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "664420343781ff529c8750641d07798090fd47069cc5d6d40440ba57c7a336e4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-03-03T19:49:49Z",
    "title_canon_sha256": "e02e53ef7e517464a552c320294a37e629cf380a7cda9889ca2f3134e21d9954"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9503019",
    "kind": "arxiv",
    "version": 1
  }
}